package com.linroid.filtermenu.library;
import android.animation.ArgbEvaluator;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Outline;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PathMeasure;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewOutlineProvider;
import android.view.animation.OvershootInterpolator;
import java.util.ArrayList;
import java.util.List;
/**
* Created by linroid on 15/3/4.
*/
public class FilterMenuLayout extends ViewGroup {
public static final String TAG = "FilterMenuLayout";
public static final int STATE_COLLAPSE = 0x1;
public static final int STATE_EXPAND = 0x2;
public static final int DURATION = 400;
private static final int DURATION_BETWEEN_ITEM = 50;
/**
* menu items position start angle*
*/
double fromAngle;
/**
* menu items position end angle *
*/
double toAngle;
Point touchPoint = new Point();
boolean inChild = false;
FilterMenu.Item touchedItem;
boolean isExpand = false;
/**
* arc radius when menu is collapsed *
*/
private int collapsedRadius;
/**
* arc radius when menu is expanded *
*/
private int expandedRadius;
private int primaryColor;
/**
* color of inner circle when menu expanded *
*/
private int primaryDarkColor;
/**
* center of circle
*/
private Point center;
private int state = STATE_COLLAPSE;
private Paint primaryPaint;
private Paint primaryDarkPaint;
private OvalOutline outlineProvider;
/**
* the expanded circle bounds*
*/
private Rect menuBounds;
/**
* set the circle position, base on its center , the menu will auto align.You should only set two directions at most.
*/
private int centerLeft, centerRight, centerTop, centerBottom;
/**
* If true, centers the circle horizontally.
*/
private boolean centerHorizontal;
/**
* If true, centers the circle vertically. *
*/
private boolean centerVertical;
/**
* all intersect points *
*/
private List<Point> intersectPoints = new ArrayList<>();
/**
* expand progress *
*/
private float expandProgress = 0;
/**
* the center drawable
* TODO: add more drawable
*/
private FilterMenuDrawable drawable;
private ObjectAnimator circleAnimator;
private ValueAnimator colorAnimator;
private FilterMenu menu;
public FilterMenuLayout(Context context) {
super(context);
init(context, null);
}
public FilterMenuLayout(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public FilterMenuLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public FilterMenuLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
init(context, attrs);
}
/**
* calculate arc angle between point a and point b
*
* @param center
* @param a
* @param b
* @param area
* @param radius
* @return
*/
private static double arcAngle(Point center, Point a, Point b, Rect area, int radius) {
double angle = threePointsAngle(center, a, b);
Point innerPoint = findMidnormalPoint(center, a, b, area, radius);
Point midInsectPoint = new Point((a.x + b.x) / 2, (a.y + b.y) / 2);
double distance = pointsDistance(midInsectPoint, innerPoint);
if (distance > radius) {
return 360 - angle;
}
return angle;
}
/**
* find the middle point of two intersect points in circle,only one point will be correct
*
* @param center
* @param a
* @param b
* @param area
* @param radius
* @return
*/
private static Point findMidnormalPoint(Point center, Point a, Point b, Rect area, int radius) {
if (a.y == b.y) {
//top
if (a.y < center.y) {
return new Point((a.x + b.x) / 2, center.y + radius);
}
//bottom
return new Point((a.x + b.x) / 2, center.y - radius);
}
if (a.x == b.x) {
//left
if (a.x < center.x) {
return new Point(center.x + radius, (a.y + b.y) / 2);
}
//right
return new Point(center.x - radius, (a.y + b.y) / 2);
}
//slope of line ab
double abSlope = (a.y - b.y) / (a.x - b.x * 1.0);
//slope of midnormal
double midnormalSlope = -1.0 / abSlope;
double radian = Math.tan(midnormalSlope);
int dy = (int) (radius * Math.sin(radian));
int dx = (int) (radius * Math.cos(radian));
Point point = new Point(center.x + dx, center.y + dy);
if (!inArea(point, area, 0)) {
point = new Point(center.x - dx, center.y - dy);
}
return point;
}
private static double pointAngleOnCircle(Point center, Point point, Point coor) {
double angle = threePointsAngle(center, point, coor);
if (point.y < center.y) {
angle = 360 - angle;
}
return angle;
}
/**
* judge if an point in the area or not
*
* @param point
* @param area
* @param offsetRatio
* @return
*/
public static boolean inArea(Point point, Rect area, float offsetRatio) {
int offset = (int) (area.width() * offsetRatio);
return point.x >= area.left - offset && point.x <= area.right + offset &&
point.y >= area.top - offset && point.y <= area.bottom + offset;
}
/**
* calculate the point a's angle of rectangle consist of point a,point b, point c;
*
* @param vertex
* @param A
* @param B
* @return
*/
private static double threePointsAngle(Point vertex, Point A, Point B) {
double b = pointsDistance(vertex, A);
double c = pointsDistance(A, B);
double a = pointsDistance(B, vertex);
return Math.toDegrees(Math.acos((a * a + b * b - c * c) / (2 * a * b)));
}
/**
* calculate distance of two points
*
* @param a
* @param b
* @return
*/
private static double pointsDistance(Point a, Point b) {
int dx = b.x - a.x;
int dy = b.y - a.y;
return Math.sqrt(dx * dx + dy * dy);
}
private void init(Context ctx, AttributeSet attrs) {
float density = getResources().getDisplayMetrics().density;
TypedArray ta = ctx.obtainStyledAttributes(attrs, R.styleable.FilterMenuLayout);
int defaultCollapsedRadius = (int) (65 / 2.f * density + 0.5);
int defaultExpandedRadius = (int) (65 * 2 * density + 0.5);
collapsedRadius = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_collapsedRadius, defaultCollapsedRadius);
expandedRadius = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_expandedRadius, defaultExpandedRadius);
centerLeft = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_centerLeft, 0);
centerRight = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_centerRight, 0);
centerTop = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_centerTop, 0);
centerBottom = ta.getDimensionPixelSize(R.styleable.FilterMenuLayout_fm_centerBottom, 0);
centerHorizontal = ta.getBoolean(R.styleable.FilterMenuLayout_fm_centerHorizontal, false);
centerVertical = ta.getBoolean(R.styleable.FilterMenuLayout_fm_centerVertical, false);
primaryColor = ta.getColor(R.styleable.FilterMenuLayout_fm_primaryColor, getResources().getColor(android.R.color.holo_blue_bright));
primaryDarkColor = ta.getColor(R.styleable.FilterMenuLayout_fm_primaryDarkColor, getResources().getColor(android.R.color.holo_blue_dark));
ta.recycle();
if (!centerHorizontal) {
centerLeft = centerLeft != 0 && centerLeft < collapsedRadius ? collapsedRadius : centerLeft;
centerRight = centerRight != 0 && centerRight < collapsedRadius ? collapsedRadius : centerRight;
if (centerLeft == 0 && centerRight == 0) {
centerLeft = collapsedRadius;
}
}
if (!centerVertical) {
centerTop = centerTop != 0 && centerTop < collapsedRadius ? collapsedRadius : centerTop;
centerBottom = centerBottom != 0 && centerBottom < collapsedRadius ? collapsedRadius : centerBottom;
if (centerTop == 0 && centerBottom == 0) {
centerTop = collapsedRadius;
}
}
center = new Point();
center.set(collapsedRadius, expandedRadius);
if (collapsedRadius > expandedRadius) {
throw new IllegalArgumentException("expandedRadius must bigger than collapsedRadius");
}
primaryPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
primaryPaint.setColor(primaryColor);
primaryPaint.setStyle(Paint.Style.FILL);
primaryDarkPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
primaryDarkPaint.setColor(primaryColor);
primaryDarkPaint.setStyle(Paint.Style.FILL);
setWillNotDraw(false);
if (Build.VERSION.SDK_INT >= 21) {
outlineProvider = new OvalOutline();
}
drawable = new FilterMenuDrawable(ctx, Color.WHITE, collapsedRadius);
menuBounds = new Rect();
circleAnimator = ObjectAnimator.ofFloat(this, "expandProgress", 0, 0);
circleAnimator.setInterpolator(new OvershootInterpolator());
circleAnimator.setDuration(DURATION);
colorAnimator = ValueAnimator.ofObject(new ArgbEvaluator(), primaryColor, primaryDarkColor);
colorAnimator.setDuration(DURATION);
colorAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
primaryDarkPaint.setColor((Integer) animation.getAnimatedValue());
}
});
setSoundEffectsEnabled(true);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
if (getChildCount() > 0) {
throw new IllegalStateException("should not add any child view to FilterMenuLayout ");
}
}
public float getExpandProgress() {
return expandProgress;
}
public void setExpandProgress(float progress) {
this.expandProgress = progress;
primaryPaint.setAlpha(Math.min(255, (int) (progress * 255)));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
invalidateOutline();
}
drawable.setExpandProgress(progress);
invalidate();
}
@Override
protected void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
void collapse(boolean animate) {
state = STATE_COLLAPSE;
for (int i = 0; i < getChildCount(); i++) {
getChildAt(i).setVisibility(View.GONE);
}
invalidate();
if (animate) {
startCollapseAnimation();
}
if (menu != null && menu.getListener() != null) {
menu.getListener().onMenuCollapse();
}
}
void expand(boolean animate) {
state = STATE_EXPAND;
for (int i = 0; i < getChildCount(); i++) {
getChildAt(i).setVisibility(View.VISIBLE);
}
invalidate();
if (animate) {
startExpandAnimation();
} else {
setItemsAlpha(1f);
}
if (menu != null && menu.getListener() != null) {
menu.getListener().onMenuExpand();
}
}
void toggle(boolean animate) {
if (state == STATE_COLLAPSE) {
expand(animate);
} else if (state == STATE_EXPAND) {
collapse(animate);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
setMeasuredDimension(width, height);
measureChildren(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected boolean verifyDrawable(Drawable who) {
return who == drawable || super.verifyDrawable(who);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (getChildCount() == 0) {
return;
}
calculateMenuItemPosition();
for (int i = 0; i < getChildCount(); i++) {
FilterMenu.Item item = (FilterMenu.Item) getChildAt(i).getTag();
item.setBounds(
l + item.getX(),
t + item.getY(),
l + item.getX() + item.getView().getMeasuredWidth(),
t + item.getY() + item.getView().getMeasuredHeight()
);
Rect bounds = item.getBounds();
item.getView().layout(bounds.left, bounds.top, bounds.right, bounds.bottom);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
touchPoint.set((int) event.getX(), (int) event.getY());
int action = event.getActionMasked();
switch (action) {
case MotionEvent.ACTION_DOWN: {
isExpand = false;
double distance = pointsDistance(touchPoint, center);
if (distance > (collapsedRadius + (expandedRadius - collapsedRadius) * expandProgress)) {
if (state == STATE_EXPAND) {
collapse(true);
return true;
}
return false;
} else {
if (state == STATE_COLLAPSE) {
expand(true);
isExpand = true;
}
return true;
}
}
case MotionEvent.ACTION_MOVE: {
if (inChild) {
if (!inArea(touchPoint, touchedItem.getBounds(), .2f)) {
touchedItem.getView().setPressed(false);
inChild = false;
}
} else {
for (int i = 0; i < getChildCount(); i++) {
View child = getChildAt(i);
FilterMenu.Item item = (FilterMenu.Item) getChildAt(i).getTag();
if (inArea(touchPoint, item.getBounds(), .2f)) {
touchedItem = item;
inChild = true;
child.dispatchTouchEvent(event);
child.setPressed(true);
break;
}
}
}
break;
}
case MotionEvent.ACTION_UP: {
if (inChild) {
if (menu != null) {
if (menu.getListener() != null) {
collapse(true);
menu.getListener().onMenuItemClick(touchedItem.getView(), touchedItem.getPosition());
}
}
touchedItem.getView().setPressed(false);
inChild = false;
}
if (!isExpand) {
collapse(true);
return true;
}
double distance = pointsDistance(touchPoint, center);
if (distance > (collapsedRadius + (expandedRadius - collapsedRadius) * expandProgress)) {
collapse(true);
return true;
}
break;
}
}
return super.onTouchEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// for (int i = 0; i < getChildCount(); i++) {
// View child = getChildAt(i);
// FilterMenu.Item item = (FilterMenu.Item) getChildAt(i).getTag();
// if(inArea(touchPoint, item.getBounds())){
// return false;
// }
// }
return super.onInterceptTouchEvent(ev);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
Log.d(TAG, "onSizeChanged: " + w + ", " + h);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
setOutlineProvider(outlineProvider);
}
int x, y;
if (centerHorizontal) {
x = w / 2 + centerLeft - centerRight;
} else {
x = centerLeft != 0 ? centerLeft : w - centerRight;
}
if (centerVertical) {
y = h / 2 + centerTop - centerBottom;
} else {
y = centerTop != 0 ? centerTop : h - centerBottom;
}
center.set(x, y);
int left = Math.max(getPaddingLeft(), center.x - expandedRadius);
int top = Math.max(getPaddingTop(), center.y - expandedRadius);
int right = Math.min(w - getPaddingRight(), center.x + expandedRadius);
int bottom = Math.min(h - getPaddingBottom(), center.y + expandedRadius);
menuBounds.set(left, top, right, bottom);
calculateIntersectPoints();
drawable.setBounds(center.x - drawable.getIntrinsicWidth() / 2,
center.y - drawable.getIntrinsicHeight() / 2,
center.x + drawable.getIntrinsicWidth() / 2,
center.y + drawable.getIntrinsicHeight() / 2
);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (expandProgress > 0f) {
canvas.drawCircle(center.x, center.y, collapsedRadius + (expandedRadius - collapsedRadius) * expandProgress, primaryPaint);
}
canvas.drawCircle(center.x, center.y, collapsedRadius + (collapsedRadius * .2f * expandProgress), primaryDarkPaint);
drawable.draw(canvas);
}
void startExpandAnimation() {
//animate circle
circleAnimator.setFloatValues(getExpandProgress(), 1f);
circleAnimator.start();
//animate color
colorAnimator.setObjectValues(colorAnimator.getAnimatedValue() == null ? primaryColor : colorAnimator.getAnimatedValue(), primaryDarkColor);
colorAnimator.start();
//animate menu item
int delay = DURATION_BETWEEN_ITEM;
for (int i = 0; i < getChildCount(); i++) {
getChildAt(i).animate()
.setStartDelay(delay)
.setDuration(DURATION)
.alphaBy(0f)
.scaleXBy(0.5f)
.scaleX(1f)
.scaleYBy(0.5f)
.scaleY(1.f)
.alpha(1f)
.start();
delay += DURATION_BETWEEN_ITEM;
}
}
void startCollapseAnimation() {
//animate circle
circleAnimator.setFloatValues(getExpandProgress(), 0f);
circleAnimator.start();
//animate color
colorAnimator.setObjectValues(colorAnimator.getAnimatedValue() == null ? primaryDarkColor : colorAnimator.getAnimatedValue(), primaryColor);
colorAnimator.start();
//animate menu item
int delay = DURATION_BETWEEN_ITEM;
for (int i = getChildCount() - 1; i >= 0; i--) {
getChildAt(i).animate()
.setStartDelay(delay)
.setDuration(DURATION)
.alpha(0)
.scaleX(0)
.scaleY(0)
.start();
delay += DURATION_BETWEEN_ITEM;
}
}
void setItemsAlpha(float alpha) {
for (int i = 0; i < getChildCount(); i++) {
getChildAt(i).setAlpha(alpha);
}
}
/**
* calculate and set position to menu items
*/
private void calculateMenuItemPosition() {
float itemRadius = (expandedRadius + collapsedRadius) / 2, f;
RectF area = new RectF(
center.x - itemRadius,
center.y - itemRadius,
center.x + itemRadius,
center.y + itemRadius);
Path path = new Path();
path.addArc(area, (float) fromAngle, (float) (toAngle - fromAngle));
PathMeasure measure = new PathMeasure(path, false);
float len = measure.getLength();
int divisor = getChildCount();
float divider = len / divisor;
for (int i = 0; i < getChildCount(); i++) {
float[] coords = new float[2];
measure.getPosTan(i * divider + divider * .5f, coords, null);
FilterMenu.Item item = (FilterMenu.Item) getChildAt(i).getTag();
item.setX((int) coords[0] - item.getView().getMeasuredWidth() / 2);
item.setY((int) coords[1] - item.getView().getMeasuredHeight() / 2);
}
}
/**
* find all intersect points, and calculate menu items display area;
*/
private void calculateIntersectPoints() {
intersectPoints.clear();
/** order intersect points clockwise **/
//left edge
if (center.x - menuBounds.left < expandedRadius) {
int dy = (int) Math.sqrt(Math.pow(expandedRadius, 2) - Math.pow(center.x - menuBounds.left, 2));
if (center.y - dy > menuBounds.top) {
intersectPoints.add(new Point(menuBounds.left, center.y - dy));
}
if (center.y + dy < menuBounds.bottom) {
intersectPoints.add(new Point(menuBounds.left, center.y + dy));
}
}
//top edge
if (center.y - menuBounds.top < expandedRadius) {
int dx = (int) Math.sqrt(Math.pow(expandedRadius, 2) - Math.pow(center.y - menuBounds.top, 2));
if (center.x + dx < menuBounds.right) {
intersectPoints.add(new Point(center.x + dx, menuBounds.top));
}
if (center.x - dx > menuBounds.left) {
intersectPoints.add(new Point(center.x - dx, menuBounds.top));
}
}
//right edge
if (menuBounds.right - center.x < expandedRadius) {
int dy = (int) Math.sqrt(Math.pow(expandedRadius, 2) - Math.pow(menuBounds.right - center.x, 2));
if (center.y - dy > menuBounds.top) {
intersectPoints.add(new Point(menuBounds.right, center.y - dy));
}
if (center.y + dy < menuBounds.bottom) {
intersectPoints.add(new Point(menuBounds.right, center.y + dy));
}
}
//bottom edge
if (menuBounds.bottom - center.y < expandedRadius) {
int dx = (int) Math.sqrt(Math.pow(expandedRadius, 2) - Math.pow(menuBounds.bottom - center.y, 2));
if (center.x + dx < menuBounds.right) {
intersectPoints.add(new Point(center.x + dx, menuBounds.bottom));
}
if (center.x - dx > menuBounds.left) {
intersectPoints.add(new Point(center.x - dx, menuBounds.bottom));
}
}
//find the maximum arc in menuBounds
int size = intersectPoints.size();
if (size == 0) {
fromAngle = 0;
toAngle = 360;
return;
}
int indexA = size - 1;
double maxAngle = arcAngle(center, intersectPoints.get(0), intersectPoints.get(indexA), menuBounds, expandedRadius);
for (int i = 0; i < size - 1; i++) {
Point a = intersectPoints.get(i);
Point b = intersectPoints.get(i + 1);
double angle = arcAngle(center, a, b, menuBounds, expandedRadius);
Point midnormalPoint = findMidnormalPoint(center, a, b, menuBounds, expandedRadius);
//if the arc(a->midnormalPoint->b) is in menuBounds and the angle is bigger, select it
int pointerIndex = i;
int endIndex = indexA + 1;
if (!isClockwise(center, a, midnormalPoint)) {
int tmpIndex = pointerIndex;
pointerIndex = endIndex;
endIndex = tmpIndex;
}
if (pointerIndex == intersectPoints.size() - 1) {
pointerIndex = 0;
} else {
pointerIndex++;
}
if (pointerIndex == endIndex && angle > maxAngle) {
indexA = i;
maxAngle = angle;
}
}
Point a = intersectPoints.get(indexA);
Point b = intersectPoints.get(indexA + 1 >= size ? 0 : indexA + 1);
Point midnormalPoint = findMidnormalPoint(center, a, b, menuBounds, expandedRadius);
Point x = new Point(menuBounds.right, center.y);
if (!isClockwise(center, a, midnormalPoint)) {
Point tmp = a;
a = b;
b = tmp;
}
fromAngle = pointAngleOnCircle(center, a, x);
toAngle = pointAngleOnCircle(center, b, x);
toAngle = toAngle <= fromAngle ? 360 + toAngle : toAngle;
}
/**
* judge a->b is ordered clockwise
*
* @param center
* @param a
* @param b
* @return
*/
private boolean isClockwise(Point center, Point a, Point b) {
double cross = (a.x - center.x) * (b.y - center.y) - (b.x - center.x) * (a.y - center.y);
return cross > 0;
}
public int getState() {
return state;
}
public void setMenu(FilterMenu menu) {
this.menu = menu;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
this.setExpandProgress(ss.expandProgress);
this.setPrimaryColor(ss.primaryColor);
this.setPrimaryDarkColor(ss.primaryDarkColor);
this.setCollapsedRadius(ss.collapsedRadius);
this.setExpandedRadius(ss.expandedRadius);
if (ss.state == STATE_COLLAPSE) {
collapse(false);
} else {
expand(false);
}
}
@Override
protected Parcelable onSaveInstanceState() {
SavedState ss = new SavedState(super.onSaveInstanceState());
ss.expandProgress = getExpandProgress();
ss.primaryColor = getPrimaryColor();
ss.primaryDarkColor = getPrimaryDarkColor();
ss.collapsedRadius = getCollapsedRadius();
ss.expandedRadius = getExpandedRadius();
ss.state = getState();
return ss;
}
public int getExpandedRadius() {
return expandedRadius;
}
public void setExpandedRadius(int expandedRadius) {
this.expandedRadius = expandedRadius;
requestLayout();
}
public int getCollapsedRadius() {
return collapsedRadius;
}
public void setCollapsedRadius(int collapsedRadius) {
this.collapsedRadius = collapsedRadius;
requestLayout();
}
public int getPrimaryColor() {
return primaryColor;
}
public void setPrimaryColor(int color) {
this.primaryColor = color;
primaryPaint.setColor(primaryColor);
invalidate();
}
public int getPrimaryDarkColor() {
return primaryDarkColor;
}
public void setPrimaryDarkColor(int color) {
this.primaryDarkColor = color;
primaryDarkPaint.setColor(color);
invalidate();
}
public static class SavedState extends BaseSavedState {
public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel source) {
return new SavedState(source);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
public float expandProgress;
public int primaryColor;
public int primaryDarkColor;
public int collapsedRadius;
public int expandedRadius;
public int state;
public SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
this.expandProgress = in.readFloat();
this.primaryColor = in.readInt();
this.primaryDarkColor = in.readInt();
this.collapsedRadius = in.readInt();
this.expandedRadius = in.readInt();
this.state = in.readInt();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeFloat(this.expandProgress);
dest.writeInt(this.primaryColor);
dest.writeInt(this.primaryDarkColor);
dest.writeInt(this.collapsedRadius);
dest.writeInt(this.expandedRadius);
dest.writeInt(this.state);
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public class OvalOutline extends ViewOutlineProvider {
public OvalOutline() {
super();
}
@Override
public void getOutline(View view, Outline outline) {
int radius = (int) (collapsedRadius + (expandedRadius - collapsedRadius) * expandProgress);
Rect area = new Rect(
center.x - radius,
center.y - radius,
center.x + radius,
center.y + radius);
outline.setRoundRect(area, radius);
}
}
}
